关于调和功能以下说法正确的有()
A、群组可与单一对象调和
B、位图填充对象可以调和
C、艺术笔对象可以调和
D、位图可以调和
E、群组不可与单一对象调和
参考答案:A, B
---Nowadays children are bearing too heavy a learning burden.
---______. So much homework do they have to do that they almost have no time for other activities.
A.So what?
B.It cannot be better
C.Good idea
D.I cannot agree more
分析某生物的双链DNA,发现腺嘌呤与胸腺嘧啶之和占全部碱基的64%,其中一条链上的腺嘌呤占该链全部碱基的30%,则对应链中腺嘌呤占整个DNA分子碱基的比例是()
A.17%
B.32%
C.34%
D.50%